HomeMy WebLinkAboutNantucket Harbor Annual Report 2006_201401221138425890
Nantucket Harbor Water Quality
Annual Report
2006
Prepared for:
Marine and Coastal Resources Department
34 Washington St.
Nantucket, MA. 02554
Prepared by:
Keith L. Conant
Town Biologist
January 2007
Introduction:
Nantucket Harbor has an approximate surface area of 5,250 acres and basin
volume of 50, 990 acre-ft. Nantucket Harbor is comprised of three large basins each
connected by a narrow race- way with two additional lobes, called Polpis Harbor. Within
Nantucket Harbor, Polpis Harbor has a surface area of 177 acres and basin volume of 923
acre-ft. Polpis Harbor is a large collector of runoff from the harbor watershed, and as
such, is a nutrient and bacteria source for Nantucket Harbor.
Water quality and circulation studies have been documented since 1990, and
monitored to some extent prior. Woods Hole Institute, Ecosystems Consulting Service
Inc. of CT., Aquatic Ecosystems, also from Ct., Applied Science Associates of RI., and
The School of Marine Science and Technology under the Massachusetts Estuary Project
under the direction of the Department of Environmental Protection have all done
extensive investigations of Nantucket Harbor. Water quality results indicate that
nutrients are increasing; and being recycled in the Head of the Harbor, and Quaise Basin.
Polpis Harbor has contributed to the decline in water quality in Quaise Basin, as nutrients
are continuing to be loaded from the harbor watershed. Though the Town area is
sewered, the lower harbor area in some years is a large source of nitrogen and
phosphorus. Runoff from the storm drains and Consue Srpings carry whatever
contaminants may be in the surface water into the lower harbor. The Department of
Public Works and Earth Tech will be working on a storm drain mitigation project in the
spring of 2007. This will combine runoff into central systems, decrease the multitude of
outflow pipes, and decrease the level of nutrients flowing into the lower harbor during
storm events.
Nantucket is not alone in the degradation of its harbor water quality. There have
been serious declines in water quality in all coastal communities due to anthropogenic
nutrient overloading. Although coastal ecosystems have the capacity to assimilate some
level of nutrient input without major changes in the ecological health, most coastal
communities have exceeded this ability. The Town of Nantucket has made discernable
efforts to understand and remediate this process of accelerated eutrophication, however a
noticeable declining trend continues. The Town will continue to monitor these trends in
order to mitigate these processes associated with development, and our uses of the
Island’s resources.
As nitrogen and phosphorus concentrations increase, the natural eutrophication
process is accelerated. This process results in excessive aquatic plant growth
(phytoplankton, macro and epiphytic algae); especially prevalent in a poorly flushed
shallow coastal embayment. Photosynthesis is increased during the day, but respiration is
also increased during the night. And when this over abundant plant growth dies, its
decomposition uses up the available dissolved oxygen and increases the frequency of
anoxic conditions. When anoxic events occur nutrients are released from the sediments
back into the water column. The continued addition of nutrients and acceleration of plant
growth leads to further decomposition by bacteria. The result is an embayment bottom
coated with an organic mud residue (i.e. Wauwinet Basin, Quaise Basin, and Polpis).
Light penetration decreases, eel grass diminishes, and a habitat once desirable for
shellfish and finfish, is now unsuitable for spawning, development, and life.
For many years 1992-2004, the Marine and Coastal Resource Department
biologist, Tracy Curley, gathered nutrient information for Nantucket Harbor and its’
watershed drainage basin. Harbor sampling includes temperature, dissolved oxygen,
salinity, water transparency, water quality constituents (nitrogen and phosphorus), and
phytoplankton. Harbor monitoring also includes similar data collected from the streams
that flow into the upper and middle harbor areas.
The Nantucket Harbor water quality stations are as follows: Site 1: Mooring
Field, Site 2: Quaise Basin, Site 3: Head of Harbor, Site 4: Nantucket Sound, Site 5:
Polpis West, and Site 6: Polpis East. These locations are designated on Map #1.
The stream stations are located on Map #2, and are as follows: Stream 1: flows
into the Head of the Harbor, Stream 2: flows into Medouie Creek, Stream 3: flows into
Polpis East, Stream 4: flows into Polpis East, draining Cranberry Bog, Stream 5: flows
into Polpis West, draining swamp near cemetery, Stream 6a: flows into Polpis West,
Stream 6b: flows into Polpis West, Stream 6c: flows into Polpis West, draining Duck
Pond, Stream 7: flows into Quaise, Stream 8: flows into Fulling Mill Brook, next to the
Life Saving Museum.
Harbor Monitoring Results:
Appendix A: contains all harbor water quality data. Appendix B: contains the
averages of A with corresponding charts. Appendix C: contains physical stream data for
the upper and middle harbor watershed. Appendix D: contains chemical stream data.
Appendix E: contains the average total nitrogen and phosphorus loading from D.
Appendix F: contains the average monthly rainfall for 2006, as collected by the
Nantucket Water Company.
Average Temperatures and Average Dissolved Oxygen:
Nantucket Harbor is relatively isothermic, with little stratification of temperature
between top and bottom. The harbor does warm faster in the spring, and cool faster in
the fall, when compared to the sound. This is because its total volume is less than that of
the sound, and more rapidly affected by sidereal conditions. Also because of this, for
short periods in the spring, surface temperatures may be slightly warmer; and then
slightly cooler conversely as winter sets in. A mild turnover may occur following
extreme winters where the surface of the harbor has been covered with ice. The
magnitude of the turnover will depend on the severity of the winter, the duration and
thickness of the ice. Cooler water will sink, driving up bottom waters, rich with nutrients
to the surface. More common on deep lakes, the result is a temporary isothermic
condition, breaking up the normal stratification. This is not typically the case with
Nantucket Harbor which is relatively shallow, and well mixed by wind and tidal action.
There was a little ice during the winter of 2006, when the harbor reached freezing
temperatures for a couple of weeks in February. Temperature in this harbor is more
relevant to biotic and anaerobic conditions. The metabolism of the fauna, and the
nutrient requirements of the flora may be affected by extreme temperatures in either
direction. The dissolved oxygen levels required to avoid nutrient recycling are the most
prevalent issues, which are affected by higher temperatures. Cooler temperatures induce
many species to go into a period of torpor or dormancy. The northern bay scallop for
example exist in a period of cessation under 7º C, and spawn at temperatures around 22º
C. Temperatures above 26º C for extended periods will increase the metabolic rate of
these animals resulting in stress, which may bring about premature death. High
temperatures did occur in 2006. During the last week of July and the first week of
August, the upper harbor reached approximately 26º C; though no major die off of
scallops was seen, nor was there any data taken showing signs of anoxia during the
sampling events.
Photosynthesis creates plant growth during the day, which in turn generates
oxygen in the water column. However, higher temperatures will decrease the solubility
of oxygen in water. Dissolved oxygen is lowered by this process, it is further lowered by
the process known as biological oxygen demand, generated from respiration occurring at
night; and the consumption of oxygen by bacteria. Dissolved oxygen levels above 5 mg/l
are a desirable condition for most aquatic species. Some species have a wide range of
tolerances and may not be stressed until D.O. levels drop below 3 mg/l. Anoxic
conditions exist when D.O. levels drop to 1 mg/l and below. Most fish, shellfish, and
benthic organisms can not survive anoxic conditions for any length of time. A eutrophic
state will also be increased as nutrients are released from soils during anoxic events, and
nitrogen is recycled into the water column, (also known as internal recycling). The
resultant affect of these conditions are the excessive blooms of phytoplankton, and the
increased growth of epiphytic and macro algae. The excessive growth of these algae
results in the shading of eel grass, which causes it to die. The increased organic matter
eventually leads to an increase in nutrients, decreasing oxygen, and decreasing habitat
(eel grass). The summer of 2006 sampling rounds showed temperatures above 26º C,
however very few hypoxic events, and no anoxic events.
Figure1: AverageTemperatures2006
Average Temperatures
8.00
12.00
16.00
20.00
24.00
28.00
April May June July Aug Sept Oct Nov
Month SampledDegrees CelsiusSite 1
Site 2
Site 3
Site 4
Site 5
Site 6
Figure 2: Average Dissolved Oxygen 2006
Average Dissolved Oxygen
4.00
5.00
6.00
7.00
8.00
9.00
10.00
April May June July Aug Sept Oct Nov
Month SampledD.O. (mg/l)Site 1
Site 2
Site 3
Site 4
Site 5
Site 6
Salinity:
Average salinity in Nantucket Harbor is usually around 30 ppt (parts per
thousand), average salinity in the open ocean is closer to 32 ppt. Salinity is important
with respects to stratification, and biodiversity. As previously discussed the harbor is
well mixed, the only area of exception to this is Polpis Harbor. This is because of the
large amount of runoff occurring in a relatively small and enclosed area, the salinity
gradients in Polpis vary widely from the open harbor. Stratification does occur here, and
surface salinities have been measured as low as 24 ppt. Though relatively shallow, the
difference between top and bottom may be as much as 6 ppt. Generally this occurs in
Polpis West, as this is where most of the fresh water input occurs. Stratification was not
well seen during the summer of 2006, however a recording as low as 27.8 ppt was seen in
Polpis West during the May sampling event. Salinity and temperature stratifications may
cause discontinuities in dissolved oxygen concentrations throughout the water column.
Different species of aquatic animals often require different salinities at different
stages in their life cycles. As such many of these species can sustain variations of salinity
ranges. This is best done as adults, however as juveniles, and as larvae, many species
have definite salinity requirements. For example winter flounder in their early life cycle
prefer salinities around 4 ppt., and herring require almost completely fresh water; as do
many anadromous fish species. Oysters may live in salinities as low as 5 ppt., but other
shellfish such as bay scallops, have salinity requirements that are much higher (25 ppt for
normal development). Further, the larvae of bay scallops can not survive a drop in
salinity below 28 ppt.
Figure 3: Average Salinity 2006
Average Salinity
28.00
28.50
29.00
29.50
30.00
30.50
31.00
31.50
32.00
April May June July Aug Sept Oct Nov
Month SampledSalinity (ppt)Site 1
Site 2
Site 3
Site 4
Site 5
Site 6
Rainfall:
Rainfall data corresponds well with salinities in Polpis, which were low in June,
when 8.23” of precipitation was recorded. A large recoding such as this will increase
runoff which may carry contaminated surface water to the harbor. Which may be
extremely detrimental if occurring during sensitive time periods, such as the scallop
spawn. Nitrogen and phosphorus levels will also be elevated increasing primary and
secondary production, i.e. phytoplankton and macro-algae production. During the drier
months salinities were noticeably the highest (Figure 3) and (Figure 4). Rainfall will also
increase nutrient loading especially in shallow embayments with little circulation, or low
flushing rates. This will be further discussed later in the section on nutrients, and the
section on streams.
Figure 4: Average Monthly Rainfall 2006
Average Monthly Rainfall
0
2
4
6
8
10
JanFebMarAprMayJunJulAugSept OctNovDecMonthInches Inches
Secchi Depth:
Secchi depth is an approximate measurement of light penetration into the vertical
water column. The recorded depth is roughly half the depth that sunlight will reach
below the surface of the water. Below this depth photosynthesis is not possible, so a
record of this information will provide a rough estimate of potential eel grass habitat.
Water transparency is also largely a factor of phytoplankton production, as such it is an
indicator of nutrients available in the water column. Generally there are two periods of
maximum water clarity, (spring and fall) prior to and following two major blooms of
phytoplankton. Usually these occur at the beginning of the spring, and just before the
winter as water temperatures warm and cool dictating a change in phytoplankton
communities.
Diatoms are the microscopic algae that make up the base of primary food
production in the marine ecosystem. They provide the base of a food web upon which all
other marine animals exist, and are normally the dominant species. However, if there is
an excessive amount of nutrients and fresh water in a system, the development of a
dinoflagellate community may evolve. In 2005 Nantucket experienced a “Red Tide“, the
toxic and potentially lethal dinoflagellate Alexandrium tamerense closed shellfish beds
from 6/2 to 7/5. This was the first known incident for Nantucket, which participates in
phytoplankton monitoring for the Division of Marine Fisheries. Extensive sampling for
paralytic shellfish poisoning (PSP) found in Alexandrium tamerense continued in 2006,
and fortunately no presence of this dinoflagellate was found. On 9/8 however a different
toxic algae which also produces a red tide was seen. This dinoflagellate is called
Cochlodinium polykrikoides, and is not poisonous to humans, but it is associated with
fish kills. Fortunately this bloom was limited, and no fish kills were seen. The effects on
shellfish species from Cochlodinium polykrikoides varies from species to species, and
may be tolerated by some while causing retarded development in others.
Secchi depths were extremely high in April when harbor sampling began for
2006. Sites 5 and 6 are shallow water sites, and do not necessarily reflect secchi depth.
When harbor sampling was discontinued for 2006 secchi depths had increased to initial
sampling depths. The low secchi depths recorded for most of the summer reflect high
nutrient availability. This is a result of loading from the watershed, loading from the
atmosphere, and internal recycling. This was seen in the Cochlodinium polykrikoides
bloom, and as bay scallops prefer diatoms it can be assumed that this was not good for
the population in that area. There was an elevated period of clarity in August, which may
be related to a drop in nitrogen and phosphorous; to be more thoroughly discussed in the
section on nutrients. This clarity combined with a decline in precipitation, which
followed a heavy flushing in June, thusly limited nutrient availability, and increased
secchi depths accordingly.
Figure 5: Secchi Depth 2006
Secchi Depth
0
5
10
15
20
April May June July Aug Sept Oct Nov
Month SampledFeet Site 1
Site 2
Site 3
Site 4
Site 5
Site 6
Nutrients:
Nitrogen:
Nitrogen is the limiting nutrient in marine ecosystems, the quantity of which will
dictate the health of any particular water body. Nitrogen is accumulating in Nantucket
Harbor; and because of the harbors shape, the effects of nitrogen are more prevalent in
some areas than others. Total nitrogen includes both organic and inorganic components.
Ammonia or NH3 was the only constituent where the detectable limit was required to be
lowered during lab analysis in order to approximate actual levels occurring in Nantucket
Harbor. The lobes of Polpis and the various bends in the three major basins, have the
capacity because of circulation patterns to trap nitrogen, and exhibit eutrophic conditions.
The Department of Environmental Protection for Massachusetts uses some standard
classifications based on nitrogen thresholds to describe the health of many marine
ecosystems. Nantucket Harbor usually falls between the SA/SB category, showing some
sings of moderate impairment, in some areas during the summer months. These
standards can be found in the Estuaries Project Interim Report 2003.
Nitrogen values for Nantucket Harbor in 2006 range widely during the sampling
period, from between 1,900 ppb TN in July, to non detectable limits for most of the later
part of the months sampled. This indicates a range of poor to excellent water quality,
which makes it difficult to discern the exact trophic state of the waters within. A total
nitrogen value > 800 ppb would be an indication of “Sever Degradation” with a hyper-
eutrophic state, and an “Impaired” classification; < 300 ppb would indicate excellent
water quality. Most years the harbor is in a mesotrophic state, indicating a fair state with
some impairment.
Nitrate NO3 values start high at sites 1 and 6 indicating impairment, however
decline rapidly as temperatures increase and nutrients are rapidly used up during
phytoplankton production. This may show a pre-existing condition of NO3 loading, and
availability. Organic nitrogen values ranged roughly between 300 ppb – 500 ppb TKN
initially then spiked to an unprecedented 1,900 ppb TKN at site 1 in July ( Figure 6),
following the extremely high level of precipitation in June. The largest drop in nitrogen
in June was in the form of ammonia, probably due to its solubility. Following the June
rains nitrogen drops off dramatically, most likely due to the flushing of the watershed
from this extremely high level of precipitation. Sites 1 through 6 for the months August
through November show nitrogen values 200 ppb TN and below, indicating excellent
water quality. Again this is probably the result of an episodic event of high precipitation,
and would not indicate a trend in the improvement of water quality in Nantucket Harbor;
as uses in the watershed have not changed dramatically.
If severely degraded conditions are attained, water bodies will become extremely
difficult to restore. A change in animal and plant communities may exist for long periods
of time, a condition which in some towns along the Cape appears to be permanent.
Fortunately Nantucket Harbor is still in good to fair condition, but harmful phytoplankton
blooms are regularly occurring, and macro algae beds of Polysiphona, Grasscilaria,
Cladophera, Ectocarpus, and others are becoming more prevalent. These macro algae are
the result of increased nutrients, and can smother, and shade eel grass beds resulting in a
loss of habitat for preferred marine organisms. Bacteria levels monitored by the Division
of Marine Fisheries, maintain shellfish closures in the lower harbor; and these areas have
increased in size. The Town of Nantucket assisted by the state is taking measures to
correct this decline, and hopefully we are improving the conditions of the problem.
Figure 6: Total Nitrogen 2006
Total Nitrogen TN
0
500
1000
1500
2000
April May June July Aug Sept Oct Nov
Month Sampled(ppb)Site 1
Site 2
Site 3
Site 4
Site 5
Site 6
Phosphorous:
Phosphorous is a limiting nutrient in fresh water, but it is of relative concern to
the marine ecosystem. An average ratio of nitrogen to phosphorous is 16:1. An over
abundance of nitrogen or phosphorous will affect the type of phytoplankton species that
will be dominant in any system. A shift or change in this ratio represents an imbalance,
which may result in the overabundance of dinoflagellates. Diatoms are the preferred
phytoplankton species, as most dinoflagellates are toxic to some degree. The level of
total phosphorous becomes a problem when values around 50 ppb and higher become
prevalent. This level would indicate a eutrophic condition; it would be associated with
excessive undesirable plant growth, and anoxic events. A value of 25 ppb TP would be
representative of a good/fair mesotrophic system with corresponding nitrogen values
around 400 ppb.
Phosphorous, like nitrogen is naturally occurring, and would be expected at
certain levels based on the geology of any given area. However, the influx of
phosphorous from fertilizers, detergents, and septic systems will load a system, and upset
the preferred balance. Usually the result is a preponderance of blue/green algae, which
through its life cycle processes can choke a system; marine or fresh. Total phosphorous
was consistently above 25 ppb for many monitoring sites throughout the summer. Many
sites recorded levels above 50 ppb, suggesting an enriched condition for the harbor.
Polpis sites were high as expected. However, not expected was a sharp decline in August
at almost all sites except Quaise, Site 2. This corresponds to the sharp decline in TN at
roughly this same time period, and may be the result of the same June precipitation /
flushing event. This at first created an overabundance in nutrients, but was soon after
followed by an uptake in phytoplankton and macro algae communities. This was then
followed by a deficit or lag time in input, which delayed nutrient build up to reportable
levels. Another sharp decline of TP at all sites occurred in October. This may be the
result of changing anthropogenic uses, combined with a sharp decline in precipitation for
the month of September. This would have created another lag time period, causing the
delay of nutrients to reach the harbor through the watershed.
Loading usually begins in the spring, and lasts through to the end of the summer,
when levels are highest. This is most likely related to the seasonal fluctuation of
residents on Island, which does not peak until late June. The 2006 summer season was
noticeably different, undoubtedly due to the uncommon level of rainfall in June. Though,
other factors to be considered when evaluating inconsistencies are temperature, dissolved
oxygen, and internal recycling.
Figure 7: Total Phosphorous 2006
Total Phoshporous TP
0
10
20
30
40
50
60
70
80
April May June July Aug Sept Oct Nov
Month Sampled(ppb)Site 1
Site 2
Site 3
Site 4
Site 5
Site 6
Streams:
The streams that enter into the head, and middle harbor areas are monitored to get
an estimate on the amount of nutrient loading that is occurring in that watershed area
(Map #2). The sampling is conducted once a month, and so may not accurately reflect a
total maximum daily load. However when cross referenced with monthly precipitation,
the amount of total nitrogen, and total phosphorous in kg/day is a relative factor in
loading which needs to be monitored to establish existing conditions, trends, and
changes. Stream data located in (Appendix C) shows that ground water temperatures are
often cooler throughout the summer than harbor temperatures. Dissolved oxygen as
expected is also lower. Water samples are taken on an ebb tide; and during dry months
high salinities may be observed in Stream 1. High levels of total nitrogen and total
phosphorous may be detected in the streams and may vary dependant on anthropogenic
uses in the associated watersheds. As yet these areas are outside the Town Sewer
District, however there are plans to inspect all septic systems in the harbor watershed in
the near future (Nantucket Health Department).
Stream 1 and 4 seem to be most affected by early rainfall, with respects to TN
loading. Total nitrogen is extremely high at both sites for the May sampling round.
Stream 4 shows the highest concentrated loading during the month of November; and is
double the highest load shown in 2005. As this stream drains the cranberry bog, it would
appear that the bog was having a direct influence and impact with regards to loading.
Streams 3, 5, 6a, and 7 showed the least amount of loading for TN during all eight
sampling rounds in 2006.
Figure 8: Total Nitrogen Loading from Streams 2006
Total Nitrogen Loading
0.0
10.0
20.0
30.0
40.0
50.0
1 2 3 4 5 6a 6b 6c 7 8
Streamkg/day4/18/06
5/15/06
6/22/06
7/13/06
8/10/06
9/11/06
10/25/06
11/9/06
Stream 8, had consistently high total phosphorous loading for seven sampling
rounds in 2006, and may be receiving a constant load from some anthropogenic uses in
its direct watershed area. Some increase or change in uses may have occurred, because
the loading of TP in 2006 was near double the load in 2005. An elevated level of loading
for TP also occurred in Stream 4, the highest of which coincide with the times of elevated
TN loading. Precipitation was relatively high for May and November, 4.5” and 4.19”
respectively. However those numbers are also relatively average for those time periods,
and do not reflect an increase in TN, or TP loading in any of the other streams. Streams
1, 2, 3, 5, 6a, 6b, 6c, and 7 had relatively low levels of loading for all months, including
June where the level of precipitation was nearly double that of May. Stream 4 therefore
represents itself as one where some sort of filtration would be beneficial, prior to these
waters entering Polpis Harbor, and subsequently Nantucket Harbor.
Figure 9: Total Phosphorous Loading from Streams 2006
Total Phosphorus Loading
0.00
1.00
2.00
3.00
4.00
5.00
6.00
1 2 3 4 5 6a 6b 6c 7 8
Streamkg/day4/18/06
5/15/06
6/22/06
7/13/06
8/10/06
9/11/06
10/25/06
11/9/06
• Stream data calculated and charted by Jeff Carlson, Beach Manager TON
Conclusion:
Nantucket Harbor remains in good/fair condition, and maintains the capacity to
produce an abundant supply of recreationally and commercially harvestable shellfish and
finfish. However there are sings of moderate impairment in certain places during the
summer months, and this is regarded with great concern. The aesthetic and intrinsic
value this natural resource holds can be seen in the property values in and around its
watershed. The State and Town have undertaken great means to protect the integrity of
the harbor. If managed well the viability of the harbor will remain intact. Soon to be
released are reports and conclusions from the Urban Harbor Institute (Harbor Plan),
Department of Environmental Protection directing the School for Marine Science and
Technology in the Massachusetts Estuaries Project for (a total maximum daily load
threshold management plan (TMDL)). Also, Earth Tech has been working with the
Nantucket Department of public works on an island wide septage management plan, and
will be retrofitting the lower harbor areas storm drains to main collection units this
spring; all in an effort to improve water quality on Nantucket and in its harbors. The
Marine Department will continue working with SMAST, and continue on its own
sampling regime. Increased sampling will include chlorophyll to the quantitative
analysis, and macro algae coverage to the qualitative analysis. Hopefully these efforts
will ensure the safety of Nantucket Harbor for years to come.
Map #1: Nantucket Harbor Sampling Stations
Map #2: Stream Sampling Stations
Appendix A
Nantucket Harbor Physical and Chemical Data 2006
Site 1 Mooring Field
Site 2 Quaise Basin
Site 3 Head of Harbor
Site 4 Nantucket Sound
Site 5 Polpis West
Site 6 Polpis East
Temperature ºC
Site 1
4/20/2006 5/24/2006 6/19/2006 7/31/2006 8/17/2006 9/13/2006 10/17/2006 11/30/2006
0 10.2 13.4 19.5 24.4 23.1 18 13.9 11
3 10.2 13.4 19.4 24.4 23 18 14 11
6 10.1 13.3 19.4 24.4 23 18 14 11
9 10.1 13.2 19.3 24.3 23 18 14 11
12 10 13.1 18.9 23.9 22.9 17.9 14 11
15 10 13 18.5 23.7 22.9 17.9 14 11
18 10 13 18.5 23.6 22.8 17.9 14 11
Site 2
4/20/2006 5/24/2006 6/19/2006 7/31/2006 8/17/2006 9/13/2006 10/17/2006 11/30/2006
0 10.7 14 20.6 25.4 23.5 17.6 13.8 10.8
3 10.7 14 20.5 25.4 23.6 17.7 13.8 10.8
6 10.6 13.8 20.5 25.3 23.6 17.7 13.8 10.8
9 10.6 13.6 20.5 25.2 23.5 17.7 13.9 10.8
12 10.6 13.5 20.5 25.1 23.4 17.6 13.9 10.7
15 10.5 13.3 20.4 25 23.3 17.6 13.9 10.7
18 10.4 13.1 20.4 24.6 23.3 17.6 13.9 10.7
21 10.4 12.9 20.3 24.5 23 17.6 13.9 10.7
24 10.3 12.9 20.3 24.3 22.8 17.6 13.9 10.7
Site 3
4/20/2006 5/24/2006 6/19/2006 7/31/2006 8/17/2006 9/13/2006 10/17/2006 11/30/2006
0 10.9 14.3 20.5 25.7 23.6 18.2 13.8 10.3
3 10.8 14.3 20.5 25.7 23.6 18.2 13.8 10.2
6 10.8 14.3 20.5 25.4 23.6 18.1 13.8 10.2
9 10.8 14.2 20.5 25.4 23.6 18.1 13.8 10.2
12 10.8 14.2 20.4 25.3 23.5 18 13.8 10.1
15 10.8 14.1 20.4 25.3 23.5 17.9 13.7 10.1
18 10.7 14.1 20.4 25.3 23.4 17.8 13.7 10.1
21 10.7 14.1 20.3 25.2 23.3 17.9 13.6 10.1
Site 4
4/20/2006 5/24/2006 6/19/2006 7/31/2006 8/17/2006 9/13/2006 10/17/2006 11/30/2006
0 9.4 12.8 18.2 23.6 22.9 18.5 14.8 10.9
3 9.4 12.8 18.1 23.4 22.8 18.5 14.8 10.8
6 9.3 12.8 18 23.2 22.8 18.4 14.8 10.8
9 9.3 12.8 18 23.1 22.8 18.4 14.8 10.7
12 9.3 12.8 17.9 23 22.8 18.4 14.8 10.7
15 9.3 12.8 17.8 23 22.8 18.3 14.8 10.7
18 9.3 12.8 17.8 23 22.8 18.3 14.8 10.7
Site 5
4/20/2006 5/24/2006 6/16/2005 7/31/2006 8/17/2006 9/13/2006 10/17/2006 11/30/2006
0 11 14.6 20.9 26.2 24.1 17.4 12.8 11.1
3 10.9 14.3 20.8 25.5 24 17.4 12.8 11.1
6 11.1 14.1 20.6 25.3 23.8 17.5 13 11
Site 6
4/20/2006 5/24/2006 6/19/2006 7/31/2006 8/17/2006 9/13/2006 10/17/2006 11/30/2006
0 11.1 14.2 21.3 25.9 24.1 17.4 12.8 11.1
3 11 14.1 21.2 25.9 24 17.4 12.8 11.1
6 11 14 21.2 25.4 22.6 17.4 12.8 11
9 10.9 13.9 21.1 25.4 23.6 17.5 12.8 11
Dissolved Oxygen mg/l
Site 1
4/20/2006 5/24/2006 6/19/2006 7/31/2006 8/17/2006 9/13/2006 10/17/2006 11/30/2006
0 7.83 6.97 8.11 6.85 6.59 6.77 8.05 8.63
3 7.82 6.91 8.08 6.75 6.57 6.74 8.02 8.64
6 7.77 7.01 8.14 6.78 6.59 6.75 8 8.66
9 7.82 7.07 8.21 6.8 6.63 6.78 8.05 8.74
12 7.85 7.23 8.19 6.53 6.63 6.81 8.04 8.79
15 7.84 7.31 8.03 6.56 6.64 6.85 8.13 8.93
18 7.97 7.36 7.93 5.85 6.59 6.85 8.11 8.87
Site 2
4/20/2006 5/24/2006 6/19/2006 7/31/2006 8/17/2006 9/13/2006 10/17/2006 11/30/2006
0 7.53 6.94 9.15 6 7.02 6.74 8.12 8.85
3 7.58 6.94 9.13 5.98 7.01 6.69 8.09 8.83
6 7.57 6.97 9.13 5.99 7.03 6.69 8.11 8.91
9 7.58 7.04 9.16 6.04 7.14 6.71 8.15 8.94
12 7.59 7.14 9.22 6.02 7.16 6.74 8.17 8.99
15 7.63 7.19 9.24 6.08 7.05 6.82 8.19 9.05
18 7.61 7.28 9.26 6.08 7.02 6.95 8.26 9.08
21 7.62 7.34 9.25 6.34 7.6 7.04 8.27 9.13
24 7.67 7.39 9.25 5.85 6.17 6.68 8.03 9.19
Site 3
4/20/2006 5/24/2006 6/19/2006 7/31/2006 8/17/2006 9/13/2006 10/17/2006 11/30/2006
0 7.38 6.86 8.79 6.62 7.3 6.92 8.08 8.96
3 7.41 6.84 8.73 6.54 7.31 9.92 7.98 8.92
6 7.41 6.82 8.72 6.12 7.3 6.89 8.02 8.98
9 7.47 6.87 8.74 6.05 7.01 6.9 8.05 8.97
12 7.48 6.88 8.77 5.51 6.94 6.9 8.02 8.99
15 7.48 6.92 8.85 5.36 6.94 6.72 8.07 9.05
18 7.5 6.92 8.86 5.14 6.81 6.47 8.05 9.11
21 7.55 6.96 8.89 3.81 6.05 6.24 7.87 9.05
Site 4
4/20/2006 5/24/2006 6/19/2006 7/31/2006 8/17/2006 9/13/2006 10/17/2006 11/30/2006
0 7.86 7.02 9.17 6.39 6.58 7.35 7.91 8.84
3 7.81 6.97 9.16 6.61 6.58 7.31 7.86 8.76
6 7.81 7.01 9.22 6.96 6.61 7.35 7.9 8.77
9 7.84 7.03 9.22 6.95 6.66 7.42 7.92 8.82
12 7.86 7.01 9.23 7.02 6.69 7.53 7.95 8.87
15 7.87 7.06 9.44 7.05 6.72 7.57 8 8.92
18 7.87 7.09 9.52 7.09 6.74 7.62 8.05 8.98
Site 5
4/20/2006 5/24/2006 6/19/2006 7/31/2006 8/17/2006 9/13/2006 10/17/2006 11/30/2006
0 7.37 6.09 8.48 5.37 7.96 6.09 8.19 8.63
3 7.35 6.61 8.46 5.11 7.99 6.33 8.12 8.55
6 7.44 6.75 8.59 5.14 8.1 6.25 8.14 8.79
Site 6
4/20/2006 5/24/2006 6/19/2006 7/31/2006 8/17/2006 9/13/2006 10/17/2006 11/30/2006
0 7.39 6.63 8.62 6.07 7.76 6.76 8.16 8.67
3 7.41 6.62 8.58 6.01 7.09 6.77 8.01 8.67
6 7.42 6.73 8.55 6.45 6.8 6.8 8.01 8.67
9 7.39 6.82 8.63 6.42 6.75 7.16 7.89 8.84
Salinity ppt.
Site 1
4/20/2006 5/24/2006 6/19/2006 7/31/2006 8/17/2006 9/13/2006 10/17/2006 11/30/2006
0 31.2 31.5 30.6 30.4 30.7 30.1 31.4 31.5
3 31.2 31.5 30.6 30.4 30.7 30.1 31.4 31.5
6 31.2 31.5 30.7 30.5 30.7 30.1 31.4 31.5
9 31.2 31.5 30.7 30.5 30.7 30.1 31.4 31.5
12 31.2 31.5 30.7 30.5 30.7 30.1 31.4 31.5
15 31.2 31.5 30.7 30.4 30.7 30.1 31.4 31.5
18 31.2 31.5 30.7 30.4 30.7 30.1 31.4 31.5
Site 2
4/20/2006 5/24/2006 6/19/2006 7/31/2006 8/17/2006 9/13/2006 10/17/2006 11/30/2006
0 31.1 31 29.8 29.8 30.6 30.6 31.3 31
3 31.1 31 29.8 29.8 30.6 30.6 31.3 31
6 31.1 31.1 29.8 29.9 30.6 30.7 31.3 31
9 31.1 31.1 29.8 29.9 30.6 30.7 31.3 31
12 31.2 31.3 29.8 30 30.6 30.7 31.3 31
15 31.2 31.5 29.9 30 30.7 30.7 31.3 31
18 31.2 31.5 29.9 30.3 30.7 30.7 31.3 31
21 31.2 31.6 29.9 30.3 30.7 30.8 31.3 31.2
24 31.2 31.6 29.9 30.3 30.7 30.8 31.3 31.2
Site 3
4/20/2006 5/24/2006 6/19/2006 7/31/2006 8/17/2006 9/13/2006 10/17/2006 11/30/2006
0 31.1 30.5 29.7 29.7 30.6 30.6 31.2 30.8
3 31.1 30.5 29.7 29.7 30.6 30.6 31.2 30.8
6 31.1 30.5 29.7 29.7 30.6 30.6 31.2 30.8
9 31.1 30.5 29.7 29.7 30.6 30.6 31.2 30.8
12 31.1 30.5 29.7 29.7 30.6 30.6 31.2 30.8
15 31.1 30.5 29.7 29.7 30.6 30.6 31.2 30.8
18 31.1 30.5 29.7 29.8 30.6 30.6 31.2 30.8
21 31.1 30.6 29.7 29.8 30.5 30.6 31.2 30.8
Site 4
4/20/2006 5/24/2006 6/19/2006 7/31/2006 8/17/2006 9/13/2006 10/17/2006 11/30/2006
0 31.3 31.5 30.7 30.6 30.9 31 31.4 31.7
3 31.3 31.5 30.7 30.7 30.9 31 31.4 31.7
6 31.3 31.5 30.7 30.6 30.9 31 31.4 31.7
9 31.3 31.5 30.7 30.6 30.9 31 31.4 31.7
12 31.3 31.5 30.7 30.5 30.9 31 31.4 31.7
15 31.3 31.6 30.7 30.5 30.9 31 31.4 31.7
18 31.3 31.6 30.7 30.5 30.9 31 31.4 31.7
Site 5
4/20/2006 5/24/2006 6/19/2006 7/31/2006 8/17/2006 9/13/2006 10/17/2006 11/30/2006
0 30.1 27.8 29.2 29.3 30.1 30.2 30.9 30.5
3 30.1 29.3 29.3 29.6 30.2 30.5 30.9 30.5
6 30.1 29.8 29.4 29.6 30.1 30.5 31.1 30.5
Site 6
4/20/2006 5/24/2006 6/19/2006 7/31/2006 8/17/2006 9/13/2006 10/17/2006 11/30/2006
0 30.8 29.8 28.4 29.3 30.3 30.5 31 30.5
3 30.8 29.9 28.4 29.4 30.4 30.5 31 30.5
6 30.9 30.1 28.5 29.5 30.3 30.5 31 30.5
9 30.8 30.1 28.5 29.5 30.3 30.5 31 30.5
Secchi
ft.
4/20/2006 5/24/2006 6/19/2006 7/31/2006 8/17/2006 9/13/2006 10/17/2006 11/30/2006
Site 1 14 12 9 8 10 11 14 14
Site 2 19 12 8 11 12 10 19 14
Site 3 14 13 8 6 12 9 16 17
Site 4 14 14 11 10.5 14 9 14 13
Site 5 5 6.5 4 4 2 4 5 6
Site 6 8 7.5 6 4 4 8 10 8
Nitrate NO3 ppb
4/20/2006 5/24/2006 6/19/2006 7/31/2006 8/17/2006 9/13/2006 10/17/2006 11/30/2006
Site 1 120 BRL 30 BRL BRL BRL BRL BRL
Site 2 30 BRL BRL BRL BRL BRL BRL BRL
Site 3 BRL BRL BRL BRL BRL 20 BRL BRL
Site 4 30 BRL BRL BRL BRL 20 BRL BRL
Site 5 30 BRL 10 BRL BRL 30 BRL BRL
Site 6 140 BRL 10 BRL BRL 20 40 BRL
Organic Nitrogen TKN ppb
4/20/2006 5/24/2006 6/19/2006 7/31/2006 8/17/2006 9/13/2006 10/17/2006 11/30/2006
Site 1 280 280 840 1900 ND 100 ND 110
Site 2 420 280 420 ND ND ND 110 ND
Site 3 280 420 420 ND 140 ND 100 ND
Site 4 560 420 280 ND ND 100 110 110
Site 5 420 420 420 700 190 ND 130 ND
Site 6 280 560 560 720 200 ND 110 ND
Total Nitrogen TN
ppb
4/20/2006 5/24/2006 6/19/2006 7/31/2006 8/17/2006 9/13/2006 10/17/2006 11/30/2006
Site 1 400 280 870 1900 ND 120 ND 11
Site 2 720 280 420 ND ND ND 110 ND
Site 3 280 420 420 ND 140 ND 100 ND
Site 4 590 420 280 ND ND 140 110 110
Site 5 420 420 430 720 190 ND 130 ND
Site 6 420 560 570 720 200 ND 150 ND
Ammonia NH3 ppb
4/20/2006 5/24/2006 6/19/2006 7/31/2006 8/17/2006 9/13/2006 10/17/2006 11/30/2006
Site 1 ND ND ND 23 20 30 ND 60
Site 2 ND 21 ND 71 40 20 30 60
Site 3 ND 37 ND 77 70 20 30 90
Site 4 97 30 ND 52 90 50 60 40
Site 5 56 42 ND 81 50 ND ND 80
Site 6 34 47 ND 76 70 ND 30 50
Total Phosphorous TP ppb
4/20/2006 5/24/2006 6/19/2006 7/31/2006 8/17/2006 9/13/2006 10/17/2006 11/30/2006
Site 1 12 31 39 39 18 42 BRL 23
Site 2 23 51 56 23 42 37 BRL 32
Site 3 35 59 63 52 BRL 53 BRL 32
Site 4 50 54 36 34 14 BRL BRL 37
Site 5 35 60 67 59 7 57 BRL 38
Site 6 27 47 74 69 BRL BRL BRL 40
BRL = below reportable limit
ND = not detected / below detectable limit
Appendix B
Nantucket Harbor Average Physical and Chemical Parameters 2006
Temperature ºC
April May June July Aug Sept Oct Nov
Site 1 10.09 13.20 19.07 24.10 22.96 17.96 13.99 11.00
Site 2 10.53 13.46 20.44 24.98 23.33 17.63 13.87 10.74
Site 3 10.79 14.20 20.44 25.41 23.51 18.03 13.75 10.16
Site 4 9.33 12.80 17.97 23.19 22.81 18.40 14.80 10.76
Site 5 11.00 14.33 20.77 25.67 23.97 17.43 12.87 11.07
Site 6 11.00 14.05 21.20 25.65 23.58 17.43 12.80 11.05
Dissolved Oxygen mg/l
April May June July Aug Sept Oct Nov
Site 1 7.84 7.12 8.10 6.59 6.61 6.79 8.06 8.75
Site 2 7.60 7.19 9.22 6.06 7.02 6.80 8.17 9.04
Site 3 7.46 6.88 8.79 5.64 6.96 7.12 8.02 9.00
Site 4 7.85 7.03 9.28 6.87 6.65 7.45 7.94 8.85
Site 5 7.39 6.48 8.51 5.21 8.02 6.22 8.15 8.66
Site 6 7.40 6.70 8.60 6.24 7.10 6.87 8.02 8.71
Salinity ppt.
April May June July Aug Sept Oct Nov
Site 1 31.20 31.50 30.67 30.44 30.70 30.10 31.40 31.50
Site 2 31.16 31.30 29.84 30.03 30.64 30.70 31.30 31.04
Site 3 31.10 30.51 29.70 29.73 30.59 30.60 31.20 30.80
Site 4 31.30 31.53 30.70 30.57 30.90 31.00 31.40 31.70
Site 5 30.10 28.97 29.30 29.50 30.13 30.40 30.97 30.50
Site 6 30.83 29.98 28.45 29.43 30.33 30.50 31.00 30.50
Secchi
ft.
April May June July Aug Sept Oct Nov
Site 1 14 12 9 8 10 11 14 14
Site 2 19 12 8 11 12 10 19 14
Site 3 14 13 8 6 12 9 16 17
Site 4 14 14 11 10.5 14 9 14 13
Site 5 5 6.5 4 4 2 4 5 6
Site 6 8 7.5 6 4 4 8 10 8
Nitrate NO3 ppb
April May June July Aug Sept Oct Nov
Site 1 120 BRL 30 BRL BRL BRL BRL BRL
Site 2 30 BRL BRL BRL BRL BRL BRL BRL
Site 3 BRL BRL BRL BRL BRL 20 BRL BRL
Site 4 30 BRL BRL BRL BRL 20 BRL BRL
Site 5 30 BRL 10 BRL BRL 30 BRL BRL
Site 6 140 BRL 10 BRL BRL 20 40 BRL
Kjeldhal Nitrogen TKN ppb
April May June July Aug Sept Oct Nov
Site 1 280 280 840 1900 ND 100 ND 110
Site 2 420 280 420 ND ND ND 110 ND
Site 3 280 420 420 ND 140 ND 100 ND
Site 4 560 420 280 ND ND 100 110 110
Site 5 420 420 420 700 190 ND 130 ND
Site 6 280 560 560 720 200 ND 110 ND
Total Nitrogen TN ppb
April May June July Aug Sept Oct Nov
Site 1 400 280 870 1900 ND 120 ND 11
Site 2 720 280 420 ND ND ND 110 ND
Site 3 280 420 420 ND 140 ND 100 ND
Site 4 590 420 280 ND ND 140 110 110
Site 5 420 420 430 720 190 ND 130 ND
Site 6 420 560 570 720 200 ND 150 ND
Ammonia NH3 ppb
April May June July Aug Sept Oct Nov
Site 1 ND ND ND 23 20 30 ND 60
Site 2 ND 21 ND 71 40 20 30 60
Site 3 ND 37 ND 77 70 20 30 90
Site 4 97 30 ND 52 90 50 60 40
Site 5 56 42 ND 81 50 ND ND 80
Site 6 34 47 ND 76 70 ND 30 50
Total Phosphorous TP ppb
April May June July Aug Sept Oct Nov
Site 1 12 31 39 39 18 42 BRL 23
Site 2 23 51 56 23 42 37 BRL 32
Site 3 35 59 63 52 BRL 53 BRL 32
Site 4 50 54 36 34 14 BRL BRL 37
Site 5 35 60 67 59 7 57 BRL 38
Site 6 27 47 74 69 BRL BRL BRL 40
Appendix C
Physical Stream Data 2006
1: flows into the Head of the Harbor
2: flows into Medouie Creek
3: flows into Polpis East
4: flows into Polpis East, draining Cranberry Bog
5: flows into Polpis West, draining swamp near cemetary
6a: flows into Polpis West
6b: flows into Polpis West
6c: flows into Polpis West, draining Duck Pond
7: flows into Quaise
8: flows into Fulling Mill Brook, next to Life Saving Museum
Temperature ºC
Stream 4/18/06 5/15/06 6/22/06 7/13/06 8/10/06 9/11/06 10/25/06 11/9/06
1 8.6 11 17.5 20.2 18.7 15.1 8.1 11.9
2 9.4 11.2 17.7 20.2 D 16.1 D 11.5
3 9.8 11.8 19.2 20.6 19.4 15.8 10.3 12.2
4 9 11.7 20.2 21.7 20.2 15.9 9.6 12
5 8.5 11.2 16.4 19.2 18.5 S D 12.1
6a 9.1 12.2 18.4 20.3 18.2 15.4 8.5 12.2
6b 8.9 11.9 17.5 19.8 21.1 15 9.1 11.7
6c 10.4 13.6 22.4 22.2 21.1 16.3 10.1 13.1
7 9.2 12.7 18.7 20.5 20.7 S D 12.7
8 10 13.3 18.6 18 18.3 15.6 10.1 12.4
Dissolved Oxygen mg/l
Stream 4/18/06 5/15/06 6/22/06 7/13/06 8/10/06 9/11/06 10/25/06 11/9/06
1 6.23 6.31 4.99 4.51 4.97 5.62 4.95 6.45
2 1.56 4.54 1.21 0.42 D 0.91 D 1.81
3 6.03 6.96 4.72 3.71 2.32 2.94 4.24 5.07
4 3.76 4.89 3.18 1.94 0.39 2.19 3.56 6.82
5 3.14 4.26 1.8 0.86 0.57 S D 3.65
6a 5.17 4.81 2.13 2.5 0.78 1.92 1.53 5.26
6b 7.02 6.23 4.42 3.95 4.4 4.78 6.2 7.64
6c 7.69 7.32 7.11 6.84 0.39 4.35 7.11 6.68
7 2.77 3.58 0.8 0.4 0.59 S D 1.07
8 5.84 6.11 5.84 3.59 3.59 4.67 5.51 5.27
Salinity ppt.
Stream 4/18/06 5/15/06 6/22/06 7/13/06 8/10/06 9/11/06 10/25/06 11/9/06
1 0.1 0.1 0.1 0.1 0 0.1 0.1 0.1
2 0.1 0 0 0.1 D 0.1 D 0.1
3 0.1 0 0 0.1 0.1 0.1 0.1 0.1
4 0.1 0 0 0 0 0 0 0.1
5 0.1 0 0 0 0 S D 0.1
6a 0 0 0.1 0 0 0 0 0.1
6b 0 0 0 0 0 0 0 0
6c 0 0 0 0 0.1 0 0 0
7 0.1 0 0.1 0.1 0 S D 0.1
8 2.2 1.8 0.7 3.8 3.4 2.2 2.3 3.1
Conductivity us
Stream 4/18/06 5/15/06 6/22/06 7/13/06 8/10/06 9/11/06 10/25/06 11/9/06
1 115.7 87.6 100 113.2 1.5 131.1 97.3 131.7
2 105.1 62.4 89.6 102.9 D 100.3 D 103.4
3 87.3 67.4 87.4 91.6 112.4 99.8 90 103.6
4 74 62.7 74.8 77.2 89.3 77.5 72.2 85.2
5 74.7 59.6 76.1 83.8 2.6 S D 102.4
6a 59.4 45.8 105.2 60.5 82.3 73.2 1.3 81.8
6b 55.6 58 28.6 85.6 4.1 76 55 76.2
6c 70.7 57.1 81 78.36 100.3 94.6 67.9 76.5
7 92.4 65 89.4 92.1 4.8 S D 88.9
8 2936 2592 155.9 N/A 5.32 4090 3064 4358
Height x Width cm
4/18/06 5/15/06 6/22/06 7/13/06 8/10/06 9/11/06 10/25/06 11/9/06
Stream Height Width Height Width Height Width Height Width Height Width Height Width Height Width Height Width
1 20 46 56 43 21 39 22 46 11 47 15 32 S S 28 36
2 6 25 26 34 16 32 9 30 D D 6 20 D D 15 30
3 12 23 18 28 20 23 14 29 13 26 12 24 12 24 16 24
4 51 88 99 76 50 93 57 84 45 64 50 90 56 88 79 80
5 16 52 19 46 9 16 15 27 10 16 S S D D 15 36
6a 6 28 15 34 9 17 8 24 12 35 6 6 3 8 9 14
6b 6 27 8 92 2 83 6 77 6 35 9 26 3 89 6 93
6c 24 37 48 42 16 26 45 30 13 26 5 23 2 12 6 15
7 17 39 21 39 22 28 15 30 12 31 S S D D 19 47
8 47 88 41 73 73 74 39 90 32 72 40 115 49 88 55 83
Velocity
4/18/06 5/15/06 6/22/06 7/13/06 8/10/06 9/11/06 10/25/06 11/9/06
Stream ft/s m/s ft/s m/s ft/s m/s ft/s m/s ft/s m/s ft/s m/s ft/s m/s ft/s m/s
1 1.39 0.42 5.2 1.58 3.6 1.09 2.64 0.80 0.46 0.14 1.49 0.45 0 0.00 2.69 0.82
2 0.69 0.21 5.67 1.72 2.3 0.70 1.06 0.32 D ##### 0.64 0.19 D ##### 1.6 0.48
3 0.72 0.22 1.33 0.40 1.6 0.48 0.85 0.26 1.86 0.56 0.36 0.11 0.3 0.09 0.74 0.22
4 0.62 0.19 2.27 0.69 0.6 0.18 0.55 0.17 1.8 0.55 0.46 0.14 0 0.00 1.39 0.42
5 0.14 0.04 0.83 0.25 1.4 0.42 1.39 0.42 0 0.00 S ##### D ##### 2.82 0.85
6a 0.46 0.14 1.28 0.39 3.05 0.92 4.66 1.41 0.35 0.11 1.39 0.42 1 0.30 10.57 3.20
6b 1.28 0.39 6.28 1.90 3.5 1.06 1.18 0.36 4.17 1.26 4.16 1.26 2.1 0.64 4.94 1.50
6c 1.39 0.42 1.92 0.58 2.21 0.67 2.24 0.68 2.2 0.67 1.46 0.44 3.92 1.19 3.36 1.02
7 0 0.00 1.19 0.36 0.8 0.24 1.95 0.59 0.2 0.06 S ##### S ##### 0.34 0.10
8 2.33 0.71 1.3 0.39 0.93 0.28 1.39 0.42 1.4 0.42 0.57 0.17 1.39 0.42 0.93 0.28
Flow (cubic meters/sec)
Stream 4/18/06 5/15/06 6/22/06 7/13/06 8/10/06 9/11/06 10/25/06 11/9/06
1 0.039 0.379 0.089 0.081 0.007 0.022 ##### 0.082
2 0.003 0.152 0.036 0.009 ##### 0.002 ##### 0.022
3 0.006 0.020 0.022 0.010 0.019 0.003 0.003 0.009
4 0.084 0.518 0.085 0.080 0.157 0.063 0.000 0.266
5 0.004 0.022 0.006 0.017 0.000 ##### ##### 0.046
6a 0.002 0.020 0.014 0.027 0.004 0.002 0.001 0.040
6b 0.006 0.140 0.018 0.017 0.027 0.029 0.017 0.084
6c 0.037 0.117 0.028 0.092 0.023 0.005 0.003 0.009
7 0.000 0.030 0.015 0.027 0.002 ##### ##### 0.009
8 0.292 0.118 0.152 0.148 0.098 0.079 0.182 0.129
S: Stagnant
D: Dry
Appendix D
Chemical Stream Data 2006
Stream 1
Total Nitrogen Total Phosphorus Nitrate TKN Ammonia
Date ppm ppb ppm ppb ppm ppm ppm
4/18/2006 0.7 700 0.055 55 BRL 0.7 0.14
5/15/2006 0.63 630 0.026 26 BRL 0.63 0.041
6/22/2006 1.19 1190 0.035 35 BRL 1.19 0.052
7/13/2006 1.2 1200 0.077 77 BRL 1.2 0.12
8/10/2006 3.6 3600 0.137 137 BRL 3.6 0.57
9/11/2006 1.88 1880 0.089 89 BRL 1.88 0.21
10/25/2006 1.33 1330 0.241 241 0.1 1.23 0.12
11/9/2006 1.4 1400 0.093 93 BRL 1.4 <0.02
Stream 2
Total Nitrogen Total Phosphorus Nitrate TKN Ammonia
Date ppm ppb ppm ppb ppm ppm ppm
4/18/2006 0.8 800 0.105 105 BRL 0.77 0.44
5/15/2006 0.49 490 0.047 47 BRL 0.49 0.07
6/22/2006 1.47 1470 0.064 64 BRL 1.47 0.11
7/13/2006 2.6 2600 0.182 182 BRL 2.6 0.28
8/10/2006 N/A N/A N/A N/A N/A N/A N/A
9/11/2006 1.32 1320 0.19 190 BRL 1.32 0.13
10/25/2006 N/A N/A N/A N/A N/A N/A N/A
11/9/2006 0.7 700 0.203 203 BRL 0.7 0.02
Stream 3
Total Nitrogen Total Phosphorus Nitrate TKN Ammonia
Date ppm ppb ppm ppb ppm ppm ppm
4/18/2006 0.4 400 0.05 50 0.12 0.28 0.18
5/15/2006 0.5 500 0.019 19 0.08 0.42 0.051
6/22/2006 1.08 1080 0.093 93 0.1 0.98 ND
7/13/2006 0.5 500 0.078 78 0.08 ND 0.051
8/10/2006 2.8 2800 0.068 68 0.06 2.7 0.19
9/11/2006 2.01 2010 0.046 46 0.13 1.88 0.12
10/25/2006 0.27 270 0.041 41 0.12 0.15 0.14
11/9/2006 0.98 980 0.047 47 BRL 0.98 0.03
Stream 4
Total Nitrogen Total Phosphorus Nitrate TKN Ammonia
Date ppm ppb ppm ppb ppm ppm ppm
4/18/2006 0.4 400 0.08 80 BRL 0.42 0.13
5/15/2006 0.7 700 0.057 57 BRL 0.7 0.037
6/22/2006 1.4 1400 0.072 72 BRL 1.4 0.059
7/13/2006 0.57 570 0.124 124 BRL 0.57 0.059
8/10/2006 1 1000 0.109 109 BRL 1 0.028
9/11/2006 0.98 980 0.066 66 BRL 0.98 0.08
10/25/2006 0.87 870 0.138 138 0.03 0.84 0.1
11/9/2006 1.82 1820 0.143 143 BRL 1.82 <0.02
Stream 5
Total Nitrogen Total Phosphorus Nitrate TKN Ammonia
Date ppm ppb ppm ppb ppm ppm ppm
4/18/2006 0 0 0.033 33 BRL BRL 0.076
5/15/2006 0.7 700 0.025 25 BRL 0.7 0.034
6/22/2006 1.82 1820 0.051 51 BRL 1.82 0.15
7/13/2006 2 2000 0.163 163 BRL 2 0.29
8/10/2006 8.3 8300 0.079 79 BRL 8.3 0.96
9/11/2006 N/A N/A N/A N/A N/A N/A N/A
10/25/2006 N/A N/A N/A N/A N/A N/A N/A
11/9/2006 1.4 1400 0.077 77 BRL 1.4 0.02
Stream 6a
Total Nitrogen Total Phosphorus Nitrate TKN Ammonia
Date ppm ppb ppm ppb ppm ppm ppm
4/18/2006 0.4 400 0.092 92 BRL 0.42 0.046
5/15/2006 0.49 490 0.044 44 BRL 0.49 ND
6/22/2006 1.89 1890 0.093 93 BRL 1.89 0.11
7/13/2006 0.5 500 0.407 407 BRL ND 0.064
8/10/2006 5.1 5100 0.271 271 BRL 5.1 0.12
9/11/2006 2.55 2550 0.119 119 BRL 2.55 0.21
10/25/2006 0.5 500 0.118 118 BRL 0.5 0.08
11/9/2006 0.7 700 0.09 90 BRL 0.7 0.03
Stream 6b
Total Nitrogen Total Phosphorus Nitrate TKN Ammonia
Date ppm ppb ppm ppb ppm ppm ppm
4/18/2006 0.6 600 0.098 98 BRL 0.63 0.1
5/15/2006 0.63 630 0.048 48 BRL 0.63 0.032
6/22/2006 0.91 910 0.085 85 BRL 0.91 ND
7/13/2006 1.2 1200 0.517 517 BRL 1.2 0.13
8/10/2006 0.5 500 0.303 303 BRL ND 0.58
9/11/2006 0.59 590 0.1 100 BRL 0.59 0.07
10/25/2006 0.39 390 0.078 78 BRL 0.39 0.08
11/9/2006 0.56 560 0.09 90 BRL 0.56 0.03
Stream 6c
Total Nitrogen Total Phosphorus Nitrate TKN Ammonia
Date ppm ppb ppm ppb ppm ppm ppm
4/18/2006 0.5 500 0.15 150 BRL 0.49 0.15
5/15/2006 0.35 350 0.039 39 BRL 0.35 ND
6/22/2006 0.42 420 0.062 62 BRL 0.91 ND
7/13/2006 0.63 630 0.097 97 BRL 0.63 0.055
8/10/2006 0.55 550 0.082 82 BRL 0.55 0.14
9/11/2006 7.56 7560 0.113 113 BRL 7.56 0.11
10/25/2006 2.1 2100 0.092 92 BRL 2.1 0.2
11/9/2006 0.56 560 0.087 87 BRL 0.56 0.02
Stream 7
Total Nitrogen Total Phosphorus Nitrate TKN Ammonia
Date ppm ppb ppm ppb ppm ppm ppm
4/18/2006 1 1000 0.167 167 BRL 1.05 0.27
5/15/2006 0.98 980 0.048 48 BRL 0.98 0.056
6/22/2006 3.15 3150 0.317 317 BRL 3.15 0.47
7/13/2006 1.8 1800 0.121 121 BRL 1.8 0.15
8/10/2006 3.1 3100 0.191 191 BRL 3.1 1
9/11/2006 N/A N/A N/A N/A N/A N/A N/A
10/25/2006 N/A N/A N/A N/A N/A N/A N/A
11/9/2006 2.38 2380 0.203 203 BRL 2.38 0.04
Stream 8
Total Nitrogen Total Phosphorus Nitrate TKN Ammonia
Date ppm ppb ppm ppb ppm ppm ppm
4/18/2006 0.1 100 0.222 222 BRL 0.14 0.022
5/15/2006 0.34 340 0.189 189 0.06 0.28 ND
6/22/2006 0.3 300 0.254 254 0.02 0.28 ND
7/13/2006 0.5 500 BRL N/A BRL ND 0.024
8/10/2006 0.5 500 0.282 282 BRL ND ND
9/11/2006 0.42 420 0.268 268 BRL 0.42 0.08
10/25/2006 0.15 150 0.225 225 0.05 0.1 0.1
11/9/2006 0.42 420 0.18 180 <0.01 0.42 0.02
BRL: Below Reportable Limit
ND: Below Detectable Limit
N/A: Not Applicable - Stream Dry or With Out
Flow
Appendix E
Steam Loading
2006
Total Nitrogen Loading (kg/day)
Stream 4/18/06 5/15/06 6/22/06 7/13/06 8/10/06 9/11/06 10/25/06 11/9/06
1 2.3 20.7 9.2 8.4 2.2 3.5 #VALUE! 9.9
2 0.2 6.4 4.5 1.9 #VALUE! 0.3 #VALUE! 1.3
3 0.2 0.9 2.1 0.5 4.6 0.5 0.1 0.7
4 2.9 31.3 10.2 3.9 13.6 5.3 0.0 41.9
5 0.0 1.3 1.0 2.9 0.0 #VALUE! #VALUE! 5.6
6a 0.1 0.8 2.3 1.2 2.0 0.3 0.0 2.4
6b 0.3 7.6 1.4 1.7 1.1 1.5 0.6 4.0
6c 1.6 3.5 1.0 5.0 1.1 3.3 0.5 0.4
7 0.0 2.5 4.1 4.1 0.6 #VALUE! #VALUE! 1.9
8 2.5 3.5 3.9 6.4 4.2 2.9 2.4 4.7
Total Phosphorus Loading (kg/day)
Stream 4/18/06 5/15/06 6/22/06 7/13/06 8/10/06 9/11/06 10/25/06 11/9/06
1 0.61 0.85 0.27 0.54 0.09 0.17 #VALUE! 0.66
2 0.03 0.62 0.20 0.14 #VALUE! 0.04 #VALUE! 0.38
3 0.03 0.03 0.18 0.07 0.11 0.01 0.01 0.03
4 0.58 2.55 0.53 0.85 1.48 0.36 0.00 3.29
5 0.01 0.05 0.03 0.24 0.00 #VALUE! #VALUE! 0.31
6a 0.02 0.08 0.11 0.95 0.10 0.02 0.01 0.31
6b 0.05 0.58 0.13 0.74 0.69 0.25 0.11 0.65
6c 0.48 0.40 0.15 0.77 0.16 0.05 0.02 0.07
7 0.00 0.12 0.41 0.28 0.04 #VALUE! #VALUE! 0.16
8 5.60 1.93 3.34 #VALUE! 2.38 1.84 3.53 2.00
Appendix F
Average Monthly Rainfall
2006
Jan Feb Mar Apr May Jun Jul Aug Sept Oct Nov Dec
Inches 4.86 1.98 0.85 2.13 4.5 8.23 4.07 3.05 0.76 2.6 4.19 3.32
Total Rainfall: 40.54 "